<!DOCTYPE html>
<html lang="en">
  <head>
    <meta charset="UTF-8" />
    <meta name="viewport" content="width=device-width, initial-scale=1.0" />
    <title>Document</title>
  </head>
  <input>
    <div id="test">
        南昌大学
    </div>
    <div id="oninput">
        输入的信息是：<span id="nowInputText"></span>
    </div>
    <input id="inputText" type="text">

    <button id="getInput">点击消失</button>

</input>
  </body>
  <script >
    var testDom = document.getElementById("test");
    testDom.innerText = "NCU";
    console.log(testDom);

    var inputDom = document.getElementById("inputText");
    var buttonDom = document.getElementById("getInput");
    buttonDom.onclick = function(){
        alert(inputDom.value);
    }
    var spanDom = document.querySelector("span");
    
    buttonDom.onclick =function(){
        inputDom.style.display = 'none';
    }
    querySelector("table nth-child(2)")
  </script>
</html>
